Outlook 2011 or 2016 for Mac: Enable Caching.Please refer to the following recommendations for using caching with your mail client: If you have a large mailbox (10 GB and over), it may be beneficial to disable caching or cache only for during a certain time period. Without caching no mail will be available without a connection. Caching mail makes copies of your mail messages to your local hard drive, which is useful for accessing messages offline, with slow connections, or if often on the move. In general, you will experience better performance with your email program if you have caching enabled (generally enabled by default). Exchange Online When to Use Caching with Your Mail Client
zip file that contains one of the file types listed above, will also fail to send.
Just set it to download headers then full items so the users starts to see some mail info across all folders quicker.There are some attachments that will not send if you try to attach them to an email message.Īde, adp, ani, bas, bat, chm, cmd, com, cpl, crt, dll, exe, hlp, hta, inf, ins, isp, js, jse, lnk, mdb, mde, msc, msi, msp, mst, pcd, pif, reg, scr, sct, shb, shs, vb, vbe, vbs, wri, wsc, wsf, wsh If an OST does get corrupted, just delete it and let it start caching again, no big deal (unless your bandwidth strapped). OST files go, I've actually had very FEW incidents of them getting corrupted, even with 40+GB ones, even when users have mechanical HDD's.
Anyway, see here for that info: Īs far as these big. However, in these scenarios, I recommend setting up additional mailboxes as separate email accounts in the profile (there's a number of reason this is much better). This limit aligns with the 50GB limit on an O365 mailbox, but if a user also has access to additional mailboxes (shared/others users) and they are set to cache as well, then they cache into the same OST as your own mailbox and it's possible to go over 50GB, and one might need to adjust the max file size if caching all email. The other thing is max OST (also impacts PST) size limits, which is set by default in Outlook 2010/2013/2016 to 47.5GB warning and 50GB limit. You don't want to have >500 folders in the ENTIRE mailbox or 100,000 items in any single folder. That being said, if you start caching large mailboxes, you need to look out for cached limits. OST file and if your mechanical HDD is loaded in general from use (which it is), Outlook will randomly hand, but SSD's pretty much eliminate this in my experience. It's better to have caches this big on an SSD because Outlook is bad about random access to the. I have one user with a 43GB mailbox and some users with 65-70GB of cached mail because they cache their own mailbox + that users 43GB mailbox. Local space being used aside, a 15GB mailbox being cached isn't a big deal IMO. It sounds like, based on the behavior you are describing, Outlook 2016 doesn't provide that prompt anymore and just shows the results of what's in local cache and on server at once. You'd get results of a search based on what data is in your cache, then you'd have to click to have it go search the rest of the mailbox. The message you are referencing about "getting more emails from the server" is something that I've only seen when doing a search, at least in Outlook 2010 and I believe 2013. The intention is for you to use search to get visibility into the items not downloaded to the cache, or go use OWA. There is no way to selectively have some folders cache beyond the global cache setting slider on the account. I thought there used to be a message at the foot of the email list saying something like "download more emails from server", but this is not showing.Īctually, I've also just noticed that if I do a search in the specific folder for a word in the subject line of one of the "missing" emails, that email is then shown in the search results, but as soon as I close the search tool it disappears again. So is there a way to download the additional emails in just specific folders? I'm presuming if I set this to "all" the "missing" emails will also be downloaded, but I've got over 15GB of email in my inbox going back 6 years, so it's probably a bit over the top to download everything. In my Outlook account settings, the cache period is set to 24 months (File -> Account Settings -> Account Settings -> Change -> Mail to keep offline. I can see the emails via OWA so I know they are there, but the ones I need are from 3 years ago and are not getting downloaded into Outlook. Have a slight problem in Outlook (running against Office 365 Exchange server) in that I can't get it to download some emails in a project-specific folder within my inbox.